Warp stop-motion for looms



D. OSGOOD WARP STOP MOTION FOR LOOMS.

APPLXCATION FILED JULY 14. 1920.

Patented Jan. 25, 1921.

UNITED STA'ILliES RATENT OFFICE.

DANA OSGOOD, F HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER CORPORA- TION, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

WARP STOP-MOTION FOR, LOOMS.

1 ,366 828 Specification of Letters Patent. Pate ted Jgu' 25, 1921.

Application filed July 14, 1920. Serial No. 396,142.

To ILZZtUhOT/lwili may COW/301W. V of the loom, the construction and arrange- Be it known that I, DANA ()sooon, a citiment being such that should a warp detector zen of the United States, residing at Hopedrop, it \Vlll engage the teeth of the bars dale, county of: Worcester, and State of and arrest the movement of the reciprocat- 5 Massachusetts, have invented Improvements ing bar by loekin g the two bars together. 60 in \Varp Stop-h lotions for Looms, 0t wlneh hen the loom has been stopped, as above the following description,in connection with indicated, the warp linder which is under the accompanying drawings, is a specificamanual controlot' the weaver, may be actution, like. characters on the drawings repreated to move both of the toothed bars and senting like parts, with them the interlocked and positively 65 This invention relates to warp-stop-moheld warp detector in a. direction laterally tions for looms, and more particularly to of the loom, the effect being that the detecmeans for locating and finding the' broken tor moves the other detectors adjacent there or abnormal warp thread which has caused to and opens up the sheet of warp threads the loom to stop. so that the weaver may readily find the ab- '70 Looms are now usually provided with normal warp thread and remedy the defect. warp-stop-motions which comprise a series 'lhe invention Wlll be best understood of warp detectors or drop wires which ordifrom the following description and acco-m narily hang upon the warp threads between panying drawings of one good practical the whip rolls and shedding mechanism, and form thereof. 75

when oneof the warp threads breaks or be- In the drawlngs: comes too slack, the warp detector or drop Figure 1 1s a perspective view of a warpwire which is controlled by that thread, is stop-motion embodying the present invenpermitted to drop or come into a position tion with some of the parts being shown in to cause loom stoppage. Owing to the large section, and others broken away; number of warp threads employed in a. Fig. 2 is an enlarged detail sectional View loom, the inconspicuous character of the showing the manner of actuating the warp Warp detectors, and other features, the finder and locating the abnormal warp weaver finds it difficult to locate the abnorre d;

30 mal warp thread which has caused the loom Fig. 3 is a plan view showing the' effect to stop, and much loss of time is incurred of actuation of the warp finder when a warp by the weaver in locating and piecing up detector is locked by the toothed bars. the broken warp thread or taking up the It has not been deemed necessary herein slack thereofv to describe the loom frame or the operating 35 An important feature of the present inparts of a loom, nor the particular means vention, therefore, consists of means under for supporting the warpstop-motion in pocontrol of the weaver for readily finding the sition between the whiprolls and shedding defective or abnormal warp thread and for mechanism, because these features of conenabling the weaver to readily piece up or struction are well known in the art and 40 take up the slack in the abnormal warp their particular detailstorm no essentials thread. I of the present invention. v I

The warp detectors or drop Wires, and The warp-stop-motion may be connected the particular means for. stopping the loom to the loom frame by supports 1, one at each when a warp detector isreleased or dropped side ot the loom, and extending between the 45 by a broken or unduly slack warp thread, supports 1, are the normally stationary and may be variously constructml, and a number, normally reciprocating toothed bars which of different types of warp detectors and are adapted to be locked together when a. stopping mechanisms ar, now wel known. warp detector drops. In the present invention, however, the drop In the present instance of the invention 50 wires are formed of metal and guided tor the normally stationary toothed bar 2 is vertical. movement relative to the guiding provided with 'a longitudinally "extending means, and the stopping mechanism inslot or guide-way 3 in which may conveneludes toothed bars, one of which is noriently be located the normally reciprocating mally stationary and the other of which is toothed bar 4.. The toothed bar 2 may hate 55 normally reciprocated during the operation two series of teeth 5, one series at each tionnr toothed bar 2, as hereinhef w 1 Li A side of the series of teeth 6 of the reciprocating bar, but this may not always be necessary, although it is a convenientancl good practical form of this feature of the invention.

It is now the usual practice to 11 tinge the warp detectors in two transversely extending columns in order to avoid crowding of the detectors by the closely adjacent Warp thremis. In the present instance of the invention the arp detectors are arranged in two columns or rows transversely of. the loom nmh consequently, there are two sets of toothed burs, one to coect With each o1 the columns or rows of (leteeters.

The normally stationary toothed hers are connected together at their ends by a spacing piece 7 anti are supported between the sifle men ll ers 8 of a bracket 9 appropriately secured to the sup 'x'arts l at each side of the loom. At one encl the normally stationm'y toothed bars 2 are further connectedv by a cross-piece 10, Fig. 1; through which extend the stems or pins ll which are (lived to the nornutlly st-z'itiouzu' k toothed bot-s 2. The pins 11 extend through it rises 12 extending upwardly from the bracket 9, as indicated at the is in Fig. i. Springs l3 placed about the guide pins ll on? hetween the riser l2 and the cross-piece i() serve nl'irinelly to yieldingly impel the non maliy stationery toothed lHllS to one Sh oi the loom but with permissive movemen oi such toothed bars lateral] oi the loo'in in opposition to the force oi? the springs,

In order to piville for different widths of looms and the adjustment of the brackets 9 thereto, the brackets 9 may he connected to the si'ippmts l by slots 1% and hoits lo. one example of which is indicated at the iei'i Fig. l.

The opposite ends oi the nornmll so (1e connected together by the spec block and the ends the toothed hairs '2 at the right Fig. ll between the side uienihei's 8 of the bracket at that side of the loom. the constiuction being; such that the toothed bars 2 may he moved laterally in the guiding brackets at the opposite sides of the loom The reciprocation oi the toothed lHHS which may be conveniently located in the central iongitiulinnl guide-Way of the fixed bars 2, may be imported by any of the wellicnoWn mechanisms now in use. in the present instance the two hers 4%, see the left in 1, are connected by it pin 16 which Warp detectors stop-motion inecl enisni through the it: which connects with the :P' rocker, the constmciion should the recipiocatin of the rcciprocntin g; b loom operation by e terlocking with the teeth oi": fixed anti reciprocating i he stopped. It has not be n the sery to illusti'et the s es connected Wit the rock i mechanism is Well known in details fol-in no essential on; invention.

stem

Mounted i t guide suppo 4, one the right, 1. L

two of which ii used have secui'eo th reto the g i ent instance [also i snppoitc are the e 26 over which the we: they 'evel from the er. she (l cling ZliGCiliHllSl'l'L 2'? may be of various co present instanc they are with en eh i the guide h 1's tectoi' is Pi'OVil'e i receive at we? "'1 but iecipi'ocm 11g Yersely of th ooni, (71113: with 'tcrlociieti (li"( tied. Warp ariously consirnc .(l, hut in. stance of sists of p finder the llfll'lllitll t" Ht cotiwg too i i are i Y sly sci Y W: Pp linden which. may pretemhl vertical surface of a cross memo ing the two side guiding hing-J hmcket 9, and may also have mi side no incline. 32 adopted to one on the syncing l:

hm: incline 3n nee-ting the two nominally sto bars 2. The warp finder c.

(and suitable guioing ineons ployetl'. in the present instance a zuljustahly secn'r'ec tenlis ii 'nverdly into 2 finder. A. spring and. nosineil wedge upwardly. The construction is such that when a warp detector drops. engage the teeth of the relatively fixed and reciprocating toothed bars and thereupon. arrest the reciprocating bar and cause the loom to stop, as usual in this class of warpstop-motions. The dropped warp detector is then gripped positively between the teeth of the two bars and by manual actuation of the warp'finder 30, the weaver moves the normally stationary, but yieldingly held toothed bars 2, transversely of the loom. and, perforce, also moves the interlocked toothed bar 4 and dropped warp detector. The etfect of this is that the warp detector-will be moved laterally somewhat from its usual working position, substantially as indi -ated in Fig. 3, and the separation of the detectors in the row and the warp th reads,'will at once indicate to the weaver the source of trouble. \Vith one hand he may then engage the dropped warp detector and then release the warp finder 30, whereupon the latter returns to initial position and at the same time the toothed bars 2 and 4, and the dropped detector, move back or transversely to their original or initial position, so that as soon as the weaver has corrected the faulty warp the loom is ready to start.

Claims- 1. In a warp-stopmotion for looms, the

combination of a series of warp detectors,

relatively movable toothed bars, means for reciprocating one of said bars and effecting loom stoppage when its reciprocating movement is arrested by a dropped detector, and different means for moving both of the toothed bars-longitudinally when they are locked. together by a dropped detector.

2. In a warp-stopmotion tor looms, the combination of a series of warp detectors, relatively movable toothed bars constructed and arranged to be locked together by a dropped warp detector to stop the loom, and manual means operable while the loom is at rest for moving both bars longitudinally and with them the dropped detectorwhen they are locked together. L,

3. A warp-stop-motion comprising, in COIIlblIllliZlOll fi' series'ot' warp detectors, a yieldingly mounted toothed bar and a re ciprocating toothed bar (,zonstructed and arranged to stop the loom when relative movement of the bars is prevented by a dropped detector, and manual means operable while the loom is at rest for moving both bars and the dropped detector laterally ot the loom.

4. A. warp stop motion, comprising in combination, a series of warp detectors, a normally stationary toothed bar and a re- .'-iprocating toothed bar constructed and arranged to be locked together by a dropped warp detector to stop the loom, and a manually actuated warp finder for moving the normally stationary toothed bar laterally of it .will i the loom and with it the other toothed bar and interlocked warp detector.

A warp-'stopmotion for looms, comprising a series of warp detectors, two toothed bars which are relatively movable longitudinally, constructed and arranged to be locked together by a dropped detector to arrest the movable bar and effect loom stoppage, and awarp finder for moving one of the toothed bars longitudinally and with it the other toothed bar and the interlocked dropped warp detector.

(3. In a warp-stop-motion for looms, the combination of a series of warp detectors, means operable by a moving part of the loom for positively grasping a dropped detector. and different means for moving the grasping means and dropped detector laterally of the loom when the loom has been stopped.

T. ln a warp-stop-motion for looms, the combination of a series of warp detectors, toothed bars both of which are mounted for longitudinal movement transversely of the loom frame, means for relatively reciprocating the toothed bars and for stopping the loom when such relative reciprocation is arrested by a dropped warp detector engaging the teeth of both bars and locking them together, and a manually actuated device for moving the normally stationary toothed bar long tudinally and with it the other toothed bar and the positively gripped warp detector held by the teeth of both bars.

8. In a warp stop motion for looms, the combination of a series of warp detectors, a normally stationary toothed bar extending transversely of the loom and supported at its ends for movement in a longitudinal. di-' rection, a normally reciprocating toothed bar adapted to be arrested in its movement and locked to the normally stationary bar by a dropped detector, and manually opcr able means located at one end of the normally stationary bar for moving both bars longitudim lly when they are locked together to indicate the position oi the abnormal warp thread.

9. In a warp stop motion for combination of spaccd rows of warp detectors, apair of normally stationary toothed bars supported at their ends upon the loom for longitudinal movement, a normally reciprocating toothed bar adjacent each normally/stationary toothed bar and adapted to be arrested in its reciprocating movement and locked to .the adjacent normally fixed bar by a dropped. detector, and manually operable means at one end of the normally stationary bars for moving the normally stationary bars and reciprocating bars longitudinally when they are locked together to indicate the position of the abnormal warp thread.

ll). In a warp stop motion for looms, the combination of a-series of warp detectors,

looms, the

(at n a cam surface 3 11 roaming L at m. d 510 be (Lied at :1 acting ly of the i upon 521M? bars w nuns:v 'inem kmglbmlmnll 35 2e?) H.193" are ionized together 13W a dropped u 1 3 and wed 4w uni 3 100113 at 1 Maia"; uws ky' W211 ramp 1:. i011 1 m looms, the i of a, 1 m5 of Warp detec'tm's, 2L

e41 zwrmally smtionary .10 bar and ,Lynornmliy reciprocazing had bar M12 be locked. together c0! 0. dropped 2.0:", and a bar shifter nomimii .z-ed ndjwi one @1111 of the tonthed 15V ndzmtud to be rlctuatec l manually "no if; v:he bars le a itudinally when fihey are x Lagether by a dropped Warp detector. m In W stop motion for iooms, the

Jdinally mnen 1 2L au'upgmi H 'mtlon series of Warp detectors, :1 raciprocating boothed bar operatively con- 5! nevted a moving part of the 100m and a 1M3 Fixation: y toothed bar, said bars mnstructe'd and awangsd be. locked $0 s' eiher by a dmpped; Warp detecfior 0 arrest and hm? me movement of the reciprocatingbar, and to ape-mtg at will and operable inlependenfiy of said mov-- 2% ,a (1 basis them @1131- ing put 0%. tha 13011 for. moving fine 1101'- 1 fir-2y are iocked'tugei mail stationary" tootmdi mu: la taml'iy of (moppeti detgutor anoi the 100321 1:; w, mm. the 109m and wligh 113 m9 otheroothed bar .13. In a stop moion for looms, the and ii'l'tGflGCkEd warp deiectorto indicate combination 0f Warp detecting a norm-(x1137 the, position of the abnormal Warp thread. 30 stationary and. a normally mai mating in tastimony whereof, I have signed my toothed bar zufiapted to be lockad togetl'ler by name to this specification. a dropped Warp deiteemr, and bar shifer DANA @SGUOD. 

